Frivolous? I need a cute, creative open and closed sign for home office

This topic may be too lightweight for this forum, but here goes. I've been struggling with calling it a day. I was thinking it might help to have a cute, fun, or philosophical sign or door knob hanger that means open or closed. Positive suggestions only, please. Otherwise, just ignore and move on to something more relevant to you... nicely, please.

 

How about something like Internet Genius at Work

and

Computer is off so come on in

 

Open: Come on In. We're Through.
Closed: Move along. There's nothing to see here.

Open: Yes, I've Got a Moment
Closed: Not now! Entrepreneur is Busy

Open: UH-HUH!
Closed: UH-UH!